Tire tread and buttress



FIG. 1 is a perspective view of a tire tread and buttress showing our new design, it being understood that the pattern is repeated uniformily throughout the circumference of the tread and buttress as shown schematically by solid lines;

FIG. 2 is a front elevation view thereof;

FIG. 3 is an enlarged fragmentary elevation view of one side thereof; and,

FIG. 4 is an enlarged fragmentary elevation view of the opposite side thereof.

The broken line showing of environmental structure in FIGS. 1, 3 and 4 of the drawing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a tire tread and buttress, as shown and described. 